6686698 has 16 divisors (see below), whose sum is σ = 10642176. Its totient is φ = 3144240.

The previous prime is 6686681. The next prime is 6686699. The reversal of 6686698 is 8966866.

It is not an unprimeable number, because it can be changed into a prime (6686699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1615 + ... + 3997.

It is an arithmetic number, because the mean of its divisors is an integer number (665136).

Almost surely, 2^6686698 is an apocalyptic number.

6686698 is a deficient number, since it is larger than the sum of its proper divisors (3955478).

6686698 is a wasteful number, since it uses less digits than its factorization.

6686698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469.

The product of its digits is 746496, while the sum is 49.

The square root of 6686698 is about 2585.8650390150. The cubic root of 6686698 is about 188.3955193571.

The spelling of 6686698 in words is "six million, six hundred eighty-six thousand, six hundred ninety-eight".